Thousands of genomes spanning 40,000 years reveal how Neanderthals have lived on through Homo sapiens.
A sweeping analysis of European and Asian genomes over the last 40,000 years reveals when and how some genetic exchange occurred between Homo sapiens and our closest cousins, Homo neanderthalensis. It also shows how the Neanderthals’ genetic footprint depended on later exchanges between members of our own species. Neanderthals are an extinct species of hominin that lived in Europe and Asia until about 40,000 years ago.
Earlier computer simulations by the research team indicated that, when a population migrates and hybridizes with a different group elsewhere, subsequent generations will have a percentage of local DNA that’s proportional to the amount of distance the migrating population came from. In other words, the farther out of Africa Homo sapiens moved, the more Neanderthal DNA they’d have in their genomes.
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